X locks up [use folder view to reproduce it]

[Xavier Gnata]

I come from 259808 and open this one for clarification:

My config : nvidia driver (and not nv), one screen only, xinerama off in xorg.conf. A fresh and up to date intrepid kubuntu (no upgrade from 8.04 but a fully new install).

X lockup during at least 10s. No real way to know what triggers that bug but I occurs each time I try to select files in a plamoid "folder view".

I get this error message each time I get a X lock up
[mi] mieqEnequeue: out-of-order valuator event; dropping.
[mi] EQ overflowing. The server is probably stuck in an infinite loop.
I'm going to apply the patch https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/259808/comments/48 asap.

Up to now, I have this backtrace (bt.txt)

Bryce: As said, I'm going to apply your patch. I can also do whatever would help to kill this bug.

[Xavier Gnata (xavier-gnata-gmail)]

Hum on which version of mieq.c should I apply your patch from
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/259808/comments/48 ?

If I try to apply it on mieq.c comming from apt-get source xorg-server, I get this:
patching file mieq.c
Hunk #1 FAILED at 126.
Hunk #2 succeeded at 133 with fuzz 1 (offset -23 lines).
Hunk #3 FAILED at 147.
2 out of 3 hunks FAILED -- saving rejects to file mieq.c.rej

Do you already have newer version of mieq.c or am I doing something wrong?

[Tormod Volden (tormodvolden)]

It seems Bryce's patch was against git head at the time (1.5.2++). See also https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/276518/comments/53

[Xavier Gnata (xavier-gnata-gmail)]

Here is the backtrace:

Backtrace:
0: /usr/bin/X(xorg_backtrace+0x26) [0x4ee236]
1: /usr/bin/X(mieqEnqueue+0x23f) [0x4cebbf]
2: /usr/bin/X(xf86PostMotionEventP+0xc4) [0x478754]
3: /usr/bin/X(xf86PostMotionEvent+0xb1) [0x478931]
4: /usr/lib/xorg/modules/input//evdev_drv.so [0x7f96d50ba83f]
5: /usr/bin/X [0x497c45]
6: /usr/bin/X [0x46f047]
7: /lib/libpthread.so.0 [0x7f96dac610f0]
8: /usr/lib/xorg/modules/drivers//nvidia_drv.so [0x7f96d6a786b7]
9: /usr/lib/libpixman-1.so.0 [0x7f96da3c8c6e]
10: /usr/lib/libpixman-1.so.0 [0x7f96da3dcbdb]
11: /usr/lib/libpixman-1.so.0 [0x7f96da3db96a]
12: /usr/lib/libpixman-1.so.0 [0x7f96da3e0984]
13: /usr/lib/libpixman-1.so.0(pixman_image_composite+0x79f) [0x7f96da3e05ef]
14: /usr/lib/xorg/modules//libwfb.so(wfbComposite+0x1ba) [0x7f96d633bc5a]
15: /usr/lib/xorg/modules/drivers//nvidia_drv.so [0x7f96d6a89556]
16: /usr/bin/X [0x531e98]
17: /usr/bin/X [0x5210da]
18: /usr/bin/X(Dispatch+0x364) [0x44d754]
19: /usr/bin/X(main+0x45d) [0x43376d]
20: /lib/libc.so.6(__libc_start_main+0xe6) [0x7f96d9203466]
21: /usr/bin/X [0x432b49]
ERROR: Server Lockup! Stuck in an infinite loop. See backtrace above.
ERROR: Server Lockup! Stuck in an infinite loop. See backtrace above.
ERROR: Server Lockup! Stuck in an infinite loop. See backtrace above.
ERROR: Server Lockup! Stuck in an infinite loop. See backtrace above.
ERROR: Server Lockup! Stuck in an infinite loop. See backtrace above.
ERROR: Server Lockup! Stuck in an infinite loop. See backtrace above.
ERROR: Server Lockup! Stuck in an infinite loop. See backtrace above.
ERROR: Server Lockup! Stuck in an infinite loop. See backtrace above.
and so on and so on (more than 100lines "ERROR: Server Lockup! Stuck in an infinite loop. See backtrace above.")

[Knedlyk (yupadmin)]

Another Xorg victim... My hardware:

GeForce2 MX/MX 400, nvidia-glx-96 (96.43.09),

(WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00000af4, 0x00000bd4)
(WW) NVIDIA(0): WAIT (1, 6, 0x8000, 0x00000af4, 0x00000bd4)
(WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00000af4, 0x00000c4c)
(WW) NVIDIA(0): WAIT (1, 6, 0x8000, 0x00000af4, 0x00000c4c)
(WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00000af4, 0x000036b4)
(WW) NVIDIA(0): WAIT (1, 6, 0x8000, 0x00000af4, 0x000036b4)
(WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00000af4, 0x00003708)
(WW) NVIDIA(0): WAIT (1, 6, 0x8000, 0x00000af4, 0x00003708)
(WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00000af4, 0x0000fad8)
(WW) NVIDIA(0): WAIT (1, 6, 0x8000, 0x00000af4, 0x0000fad8)
[mi] EQ overflowing. The server is probably stuck in an infinite loop.
[mi] mieqEnequeue: out-of-order valuator event; dropping.
[mi] EQ overflowing. The server is probably stuck in an infinite loop.
[mi] mieqEnequeue: out-of-order valuator event; dropping.
[mi] EQ overflowing. The server is probably stuck in an infinite loop.
[mi] mieqEnequeue: out-of-order valuator event; dropping.

But very strange, during the last week everything worked well, but after today upgrades and after xorg restart server become lockup.

[Tormod Volden (tormodvolden)]

Please attach the full Xorg.0.log. It's probably a bug in the proprietary nvidia driver.

[Bryce Harrington (bryce)]

[This is an automated message]

Hi xavier-gnata-gmail,

Please attach the output of `lspci -vvnn`, and attach your /var/log/Xorg.0.log file from after reproducing this issue. If you've made any customizations to your /etc/X11/xorg.conf please attach that as well.

[Knedlyk (yupadmin)]

Hi Tormod,

I cannot attach xorg log, because now everything is stuck just after gdm starts. So I have to use nv-driver.

[Knedlyk (yupadmin)]

Well, I made some experiments and here are my results (see attachments) (in xorg nvidia driver is commented out, but I used "nvidia" in my experiments)

[Tormod Volden (tormodvolden)]

Knedlyk, please file your own bug.

[Xavier Gnata (xavier-gnata-gmail)]

Well I'm just not able to reproduce it with the new nvidia driver
x86_64-180.06 ...looks like a bug in close source nvidia drivers...

01:00.0 VGA compatible controller: nVidia Corporation GeForce 8600M GT
(rev a1)
        Subsystem: Dell Device 01f1

        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-

        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-

        Latency: 0

        Interrupt: pin A routed to IRQ 16

        Region 0: Memory at fd000000 (32-bit, non-prefetchable)
[size=16M]
        Region 1: Memory at e0000000 (64-bit, prefetchable) [size=256M]

        Region 3: Memory at fa000000 (64-bit, non-prefetchable)
[size=32M]
        Region 5: I/O ports at df00 [size=128]

        [virtual] Expansion ROM at fea00000 [disabled] [size=128K]

        Capabilities: <access denied>

        Kernel driver in use: nvidia

        Kernel modules: nvidia, nvidiafb

Section "Screen"
        Identifier "Default Screen"
        Monitor "Configured Monitor"
        Device "Configured Video Device"
        DefaultDepth 24
        Option "RenderAccel" "True"
        Option "AllowGLXWithComposite" "True"
        Option "AddARGBGLXVisuals" "True"
        Option "PixmapCacheSize" "1000000"
        Option "AllowSHMPixmaps" "0"
EndSection

Section "Module"
        Load "glx"
EndSection

Section "Device"
        Identifier "Configured Video Device"
        Driver "nvidia"
        Option "NoLogo" "True"
EndSection

Section "ServerFlags"
        Option "Xinerama" "0"
EndSection

[Nikolaj Sheller (nikolajsheller)]

I'm seeing this problem as well:

Xorg.0.log.old:
*repeats*
[mi] EQ overflowing. The server is probably stuck in an infinite loop.
[mi] mieqEnequeue: out-of-order valuator event; dropping.
*repeats*

This is on dualhead ATI and Linux 2.6.27-11-generic #1 SMP Thu Jan 29 19:28:32 UTC 2009 x86_64 GNU/Linux:
01:00.0 VGA compatible controller: ATI Technologies Inc RV516 [Radeon X1300/X1550 Series]
01:00.1 Display controller: ATI Technologies Inc RV516 [Radeon X1300 Pro] (Secondary)

Disabling compiz resolves the problem.
With compiz enabled, everything works without problems for ~30 minutes before X locks up. Mouse can still be moved, but X cannt be restarted (ctrl+alt+backspace) and I can't swithc to another tty (ctrl+alt+F1->F12).

See also bug 259808.